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FX MJ050SB mini junction box in Sedona Brown showing 1/2-inch threaded opening, mounting flange, and top cover.

FX MJ050SB Mini J-Box, 1/2" Thread, Sedona Brown Finish

Brand: FX
Save 25%
$50.11
$37.58
SKU MJ050SB

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The FX MJ050SB Mini J-Box is a compact surface-mount junction box designed for FX Luminaire low-voltage fixtures. Finished in Sedona Brown, this powder-coated aluminum box provides a protected enclosure for wire connections and accepts 1/2" threaded fittings for secure fixture mounting.

  • 1/2" thread compatibility: Accepts standard 1/2" threaded mounts for JB® downlights and many small FX fixtures.
  • Durable construction: Powder-coated aluminum finish resists corrosion and matches FX fixture colors.
  • Compact yet roomy: Updated internal volume accommodates wire nuts and low-voltage connections for tidy installations.
  • Easy installation: Includes snap-on backing and mounting hardware for straightforward surface mounting; reduces exposed wirenuts.
  • Approximate dimensions: 3.5" x 2.125" x 1.32" (length x width x height) to fit tight mounting locations.

Use the MJ050SB to surface-mount landscape or architectural fixtures where a clean, weather-resistant junction is needed. Verify fixture compatibility and local electrical codes before installation. For best results, pair with FX Luminaire fixtures and follow manufacturer instructions; professional installation is recommended for low-voltage wiring.

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Frequently Asked Questions

What fixtures are compatible with the MJ050SB Mini J-Box?
Designed for FX Luminaire downlights (JB® series) and many small FX fixtures; confirm fixture threading and mounting details.
What are the MJ050SB dimensions and wiring capacity?
Approx. 3.5" x 2.125" x 1.32". Updated internal volume fits wire nuts and low-voltage connections.
Does the MJ050SB include mounting hardware and backing?
Yes—includes mounting hardware and snap-on backing for straightforward surface mounting and concealed wire connections.
What material and finish does the mini J-box have?
Powder-coated aluminum in Sedona Brown for corrosion resistance and color matching with FX fixtures.